MacOS Catalina Verifying app at bootstrap

I updated to Catalina yesterday and now I have the following message:

every time I turn on my macbook. Until it finishes, I can't open any app.

I've already tried:

sudo xattr -d com.apple.quarantine /Applications/Docker.app

and the output is:

xattr: /Applications/Docker.app: No such xattr: com.apple.quarantine

I have the same problems with other apps like Xcode, Spotify, iOS runtime 11.0 and so on.

I've never encountered this error before.Should I just wait an hotfix by Apple or do we have a workaround for it?

Update:

I contacted the Apple Support and they suggested me to perform a first aid on the HD and re-install the OS. Both didn't work.

Temporary workaround

https://discussions.apple.com/thread/250735975?answerId=251529672022#251529672022

(This reduces the security of macOS so it's just temporary)